Based on technology of analyzing and interpolation of GIS, the research study spatial distribution of airpollution of Lanzhou in winter. In the study, data derived from observation stations dated from 1999 to 2000 in winter, were interpolated by Surfer software to draw isoline map, and the map was overlaid with the administration map in GIS. Then we studied relation between resource and distribution of SO2 and TSP in Lanzhou. Referring to the state air quality standard, distribution of pollution intensity of the above pollutants was regionalized. The study concluded that in winter, pollution intensity was more serious than the other sea- sons and contribution ratio by TSP is larger than SO2. It is coincident with distribution of resources that distribution pattern of pollution intensity of SO2 and TSP in the city zone. The study proved that spatial analyzing technology can be nice to display dispersed and distributed characteristic of pollutants in the city located in plateau of typical basin landform.
Arid Land Geography